Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NH
>

Bearing No. NH228R

Specifications
(Boundary dimensions ...etc)

d(mm)140
D(mm)250
B(mm)42
r(min.)(mm)3
r1(min.)(mm)3
Fw(mm)169
Ew(mm)-
Basic load ratings : Cr(kN)491
Basic load ratings : C0r(kN)514
Fatigue load limit : Cu(kN)67.5
Limiting speeds(Grease lub.)(min-1)2400
Limiting speeds(Oil lub.)(min-1)2900
sd1(mm)180
B1(mm)11
B2(mm)18

Mounting dimensions

da(min.)(mm)153
db(min.)(mm)-
db(max.)(mm)-
dc(min.)(mm)-
dd(min.)(mm)-
Da(max.)(mm)237
Db(max.)(mm)-
Db(min.)(mm)-
ra(max.)(mm)2.5
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 9.72
JTEKT

2025/06/01